Turning machines



Oct. 20, 1970. z. MARKGRAF TURNING MACHINES Filed June 6, 1968 4 Sheets-Sheet 1 FIG. 1.

INVENTOR ATTQR pp;

Oct. 20, 1970 z. MARKGRAF TURNING MACHINES 4 Sheets-Sheet 2 Filed June 6, 1968 mvjgirudL Oct. 20, 1970 2. MARKGRAF TURNING MACHINES 4 Sheets-Sheet 5 Filed June 6, 1968 INVENTOR Oct. 20, 1970 2. MARKGRAF TURNING MACHINES 4 Sheets-Sheet 4 Filed June 6, 1968 I l I I l IL :IHNYEQTOR United States Patent O 3,534,643 TURNING MACHINES Zsigmond Markgraf, Warwick, England, asslgnor to Wickman Machine Tool Sales Limited, Coventry, England, a British com an Filed ilun e 6, 1968, Ser. No. 734,937 Claims priority, application Great Britain, June 26, 1967, 29,337/ 67 Int. Cl. B23b 17/00 U.S. Cl. 82-32 3 Claims ABSTRACT OF THE DISCLOSURE A turning machine in which a bed is provided with a vertical end portion having extending horizontally therefrom a pair of parallel members. The parallel members are adapted to support slideways and are spaced from one another both vertically and horizontally. The end portion includes an inclined surface which extends between the parallel members, and the headstock of the machine is supported on said inclined surface in use.

BACKGROUND OF THE INVENTION This invention relates to turning machines, particularly lathes, and has for its object to provide a turning machine of basic configuration which can easily be adapted to a number of different forms.

SUMMARY OF THE INVENTION A turning machine according to the invention includes a bed comprisng a vertical end portion having extending horizontally therefrom a pair of members defining respective parallel flat surfaces to support slideways, said surfaces being spaced from each 'other both vertically and horizontally and the end portion including an inclined surface extending between said members, on which the headstock of the machine is supported.

One example of the invention is illustrated in the accompanying drawings wherein:

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a perspective view of the bed of a turning machine,

FIG. 2 is a perspective view of a lathe utilizing the bed shown in FIG. 1.

FIGS. 3 and 4 are view similar to FIG. 2 of modifications of the lathe in FIG. 2 and,

FIG. 5 is a simplified end view of the lathe shown in FIG. 4.

DETAILED DESCRIPTION OF THE INVENTION Referring to the drawings the lathe includes a cast or fabricated bed 11 comprising a pair of vertical end portions 12, '13 which are interconnected by a pair of parallel horizontal slideway supporting members 15, 16. The members 15, 16 are spaced apart both vertically and rearwardly of the bed, with the lower member 15 being at the front of the bed. The bed further includes a member 19 extending between the portions 12, 13 below the member 16. The end portion 12 includes an inclined surface 14 which extends from the forward edge of the member 16 to the forward edge of the member 15, and the end portion 13 includes an inclined surface 17 which extends from the forward edge of the member 16 substantially to the rearward edge of the member 15, with the rearward edge of the member 15 and surface 17 being joined by a short vertical surface 18. The provision of the surfaces 14, 17 rather than making the end portions 12, 13 of L-shaped construction enhances the rigidity of the bed, so that the bed is sufliciently rigid to form the basis of a wide variety of machines.

In FIG. 2 a slideway 21 is supported on the member 16 and a headstock 22 is supported on the surface 14. The slideway 21 carries a tool supporting carriage 23, so that the turning machine can operate as a simple repetition lathe. By providing a second slideway 24 (FIG. 3) and too-l supporting carriage 27 supported on the member 15 a more complex lathe is produced, and moreover it will be appreciated that alternative forms of slideways (FIGS. 4 and 5) can be provided. In addition, it is possible to construct the headstock in the form of a simple two speed unit or more complex and expensive three, four, five or six speed units without modifying the basic casting of the headstock.

It will be appreciated therefore that it is possible to provide a wide range of different machines all utilizing the same bed because as previously stated the construction of the bed is such that it is sufliciently rigid as to form the basis of a wide range of turning machines.

When a machine utilizing a slideway supported on the member '15 is being used the swarf cut from the workpiece can be collected in a swarf tray 25 positioned in front of the member 15. It is possible to position the swarf tray 25 in front of the member 15 while still allowing an operator access to the chuck of the machine from in front of the machine since as the headstock 22 is supported on the inclined surface 14 the headstock 22 can be constructed with the chuck 22a thereof nearer the front of the machine than is possible with certain conventional constructions. Thus, even though the tray 25 is provided in front of the member 15 the operator can still reach the chuck from the front of the machine.

Furthermore, swarf cut from a workpiece by tools carried on a slide supported on the member 16 mainly falls between the members 15, 16 and is collected in a second swarf tray 26 defined by the rear face of the member 15 and the upper face of the member 19. Thus swarf cut by tools on the upper slide in general does not fall on the lower slide.

In the case of the lathe shown in FIG. 2 the trays 25 and 26 together with member 15 form a single receptacle for the swarf.

The swarf tray 25 can be integral with or separate from the bed 11 and moreover the bed 11 can be formed with a tunnel 27 (FIGS. 1 and 5) whereby swarf in the tray 25 can be removed from the rear of the machine through the tray 26.

It will be appreciated that since a large range of machines can be produced all having a common form of bed then it is possible to convert one machine in the range to any other machine in the range.

The slides can be actuated hydraulically or by other known means and can carry conventional turrets or tools which can be adapted for profiling if required.

I claim:

1. A turning machine having a bed comprising a vertical end portion having extending horizontally therefrom a pair of members defining respective parallel flat surfaces to support slideways, said surfaces being spaced from 3 4 each other both vertically and horizontally and the end edge of the upper one of said surfaces adjacent to the portion including an inclined surface extending between lower one to the remote side of said lower surface. said members, on which the headstock of the machine is supported. References Cited 2. The turning machine as claimed in claim '1 including a second vertical end portion joining said p'air UNITED STATES PATENTS of members at their ends remote from the first vertical 1 639 8/1927 Johnson 82 32 XR end portion, and said second end portion having an in- 2993399 7/1961 Musil XR clined surface extending between said members. 3186267 6/1965 Pabst g 'g 82 32 XR 3. The turning machine as claimed in claim 1 in which 10 the inclined surface of the end portion extends from the LEONIDfKS V Primary EXamiHeI' 

